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Concrete rooftop membrane repair and leak sealing injection

Rooftop leak sealing and membrane repair - Waterstop Solution

Concrete rooftop membrane repair and leak sealing injection


Rooftop leak sealing and membrane repair


Roofs are constantly under tremendous environmental stress. They are exposed to direct sunlight, rain, pollution, and salt if near the ocean, which can decrease the waterproofing membrane’s efficacy over time. The performance reduction can make the concrete and other building elements vulnerable to water ingress and if not repaired early it can lead to extensive and costly repairs.

Even a seemingly superficial leak can be symptomatic of hidden moisture-related deterioration, so they are best to remediate at an early stage. A small issue can develop into extensive waterproofing and concrete defect repairs.

The body corporate of this building carries out regular maintenance inspections to evaluate the condition of the waterproofing system on the rooftop – It is a key component of their maintenance program.

When they discovered that the rooftop waterproofing membrane was showing signs of maintenance needs and some small signs of water ingress into the building below the rooftop, they engaged Waterstop Solutions to inspect and provide a leak sealing and remedial waterproofing solution.

During our inspection, we identified areas around the pipe penetrations that may serve as entry points for water ingress between the topping slab and construction slab. Our recommendation was to perform high-pressure leak sealing injections of polyurethane resin to the pipe penetrations on the rooftop to seal off the water entry points. The existing membrane was in good condition, needing only some areas repaired, so a full waterproofing membrane refurbishment was fortunately not required.


Leak sealing injections and remedial waterproofing works completed by our team of leaks sealing specialists:


1. Mechanically remove identified areas of waterproofing membrane requiring repairs.
2. Install polyurethane modified acrylic membrane with water-borne epoxy moisture barrier primer.
3. around the bases of stands for ducting.
4. Treat all joints and visible cracks with premium joint sealant.
5. Perform high-pressure leak sealing injection of polyurethane resin to the pipe penetrations on the rooftop to stop water ingress between the topping slab and construction slab.


Rooftop leak sealing and waterproof membrane repair completed - Waterstop Solutions

Rooftop leak sealing and waterproof membrane repair completed – Waterstop Solutions


Give us a call to discuss the best protective treatment application for your vertical and horizontal surfaces to help you choose the appropriate product and methods to protect them and how to best prepare the surface before installation for best performance.

If you have any issues with water ingress, rooftop leaks, leaking balcony, leaking basement, wet lift pit, cracking concrete slabs, structural cracks, concrete deterioration, spalling concrete, concrete cancer, deteriorated joints, moisture, seepage, efflorescence, rising damp and/or high-flow active leaks in concrete structures, we would be happy to assist you. You are welcome to contact us with any questions that you may have.

Waterstop Solutions teams are available for all your concrete repair and remedial waterproofing needs in Brisbane, Gold Coast, Sunshine Coast and Sydney.


Brisbane office: (07) 3205 1899   


Sydney office: (02) 9346 8308   

Email: [email protected]


Are you interested in finding out more about the various remedial building services we are providing?

Please click on the image below to download Waterstop Solutions Capability Statement

Waterstop Solutions Capability Statement

Waterstop Solutions Capability Statement is now available to download as PDF. (The image is clickable and opens up a link to our Capability Statement). 




Good maintenance begins with a proactive approach to maintain, keep, preserve and protect a building. 

Remember that seepage/water ingress into areas such as balconies, basements, concrete roofs, car parks and retaining walls, should not be ignored – call a remedial waterproofing professional today for an assessment to provide you with the best solution for your situation.

At Waterstop Solutions, we carry out a wide range of remedial works to concrete structures post-construction stage in Brisbane, Gold Coast, Sunshine Coast, Sydney and outlying areas in Queensland and New South Wales.

Equipped with major civil works experience, we can quickly determine the best approach to rectify all seepage and concrete deterioration issues.


It takes licensed remedial waterproofer and leak sealing experts like us at Waterstop Solutions to ensure that the pathways for water to ingress are properly sealed off. A depth of technical knowledge and experience, along with a proud reputation for integrity and reliability, has made Waterstop Solutions the go-to company for many Defect Managers working for major construction companies across Queensland and New South Wales.

We at Waterstop Solutions have the technical and practical expertise to diagnose the source of the leak and will provide you with our recommended solution to achieving an effective, high-quality, long-lasting repair to stop the water ingress with minimal disruption

We believe in and are committed to always delivering high-quality solutions by utilising the right products and techniques for each specific project combined with our industry-leading know-how on tap. We have a large talent pool of specialist leak sealing and concrete repair technicians with Certificate III in construction waterproofing in Queensland and New South Wales that are extensively trained in our systems and project execution methods.

The leadership positions on every Waterstop Solutions project are operated by highly qualified, certified and experienced industry professionals. Our in-house skills and expertise gained from more than 60 years of industry experience provide a full range of high-quality remedial waterproofing and concrete repair works to commercial buildings, civil infrastructures, industrial sites and residential properties. From waterproofing diagnostics, preventative and remediation solutions – All of our waterproofing solutions are quality guaranteed.


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